Yep, that's how I do my gif conversions because it allows for much finer control, and often returns better results. I built an entire app around abstracting this technique: http://gifmachine.xwl.me/
Yes, I guess I could figure out such options but let me explain what problem I have. I take multiple photos (e.g. my camera can take 10 photos per second) and want to make video from that. Gif is poor option as photos are taken with hand and are shaky a little bit. Gif will get big in size because of that alone. Video (e.g. webm) is very good alternative for that. Your project (?) offers option to add text (and other nice little details) and that makes it killer alternative.
I haven't used this, but it looks like this might be what you're looking for [1]. Construct with a folder name and framerate and then use the to_videofile method.
